{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "The extent to which different forms of nanoparticles of titanium dioxide ( nano - TiO2 ) aggregated with microalgae , decreased food levels and hence impaired growth , reproduction and fitness of Daphnia magna individuals were studied ."}
{"Chemical": ["titanium dioxide", "TiO2"]}